A viral species is not defined on the basis of the disease symptoms it causes. The best example of this is
a. polio.
b. rabies.
c. hepatitis.
d. chickenpox and shingles.
e. measles.

검증된 단계별 안내

Understand that viral species classification is based on genetic and structural characteristics rather than the symptoms or diseases they cause.

Recognize that some viruses can cause multiple distinct diseases or different clinical manifestations, which means disease symptoms alone are not reliable for defining viral species.

Identify the example where a single viral species causes more than one distinct disease, illustrating that symptoms are not the defining factor.

Recall that chickenpox and shingles are caused by the same virus (varicella-zoster virus), but they present as different diseases at different times.

Conclude that the best example illustrating that viral species are not defined by disease symptoms is the virus causing chickenpox and shingles.

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주요 개념

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Viral Species Definition

Viral species are classified based on genetic, structural, and replication characteristics rather than the symptoms they cause. Unlike bacteria, viruses cannot be grouped solely by disease manifestation because different viruses can cause similar symptoms, and one virus can cause multiple diseases.

Latency and Reactivation in Viruses

Some viruses can remain dormant in the host and reactivate later, causing different diseases at different times. For example, the varicella-zoster virus causes chickenpox initially and can later reactivate as shingles, illustrating why disease symptoms alone do not define viral species.

Disease Symptom Overlap Among Viruses

Different viruses can cause similar symptoms, making symptom-based classification unreliable. For instance, hepatitis can be caused by multiple unrelated viruses (A, B, C), showing that symptoms alone do not determine viral species identity.

A viral species is not defined on the basis of the disease symptoms it causes. The best example of this isa. polio.b. rabies.c. hepatitis.d. chickenpox and shingles.e. measles.